# US 9,518,892 B1 · Apparatus for identifying optical array polarity and measuring optical signal and power or loss > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,892 B1 - Document ID: US9518892B1 - Status: Granted - Kind: B1 - Application number: 14/830,564 - Filed: 2015-08-19 - Granted: 2016-12-13 - Earliest claimed: 2015-08-19 - Assignees: Fluke Corporation - Applicants: Fluke Corporation - Inventors: J. David Schell - Web page: https://patentgrep.com/patent/US9518892B1 ## CPC - G01M 11/33: {with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face} - G01D 5/268: {using optical fibres (G01D5/28 - G01D5/38 take precedence)} - G01J 1/42: using electric radiation detectors (optical or mechanical part G01J1/04; by comparison with a reference light or electric value G01J1/10) - G02B 6/3885: {Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type (optical ribbon cable G02B6/4403, G02B6/448)} - G02B 6/3895: {identification of connection, e.g. right plug to the right socket or full engagement of the mating parts (keying element on the plug or adapter G02B6/3831; keying element on the ferrule G02B6/3851; keying element for electrical connection H01R13/64)} - H04B 10/07: Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04B: TRANSMISSION ## Abstract An apparatus for determining optical fiber array polarity is disclosed. The apparatus may be used to determine optical signal loss or intensity. An adapter may be used to couple the apparatus to a variety of optical fiber connectors. The apparatus includes a position sensing detector and processing circuitry. The position sensing detector includes a sensor that receives optical signals and electrodes that output respective output signals in response to receipt of an optical signal. The processing circuitry receives the output signals and identifies locations at which the optical signals were incident on the sensor. The processing circuitry also determines the receiving position in the optical array of an optical fiber and a polarity of the optical array based on the receiving position and a corresponding transmitting position. The processing circuitry may determine an intensity or loss of the optical signal based on an aggregate of the output signals. ## Claims ### Claim 1 An apparatus for determining an optical fiber array polarity comprising: a position sensing detector comprising: a sensor positionable with respect to an optical array, wherein the sensor receives, from the optical array, a plurality of optical signals that are incident on the sensor while the sensor remains in a fixed position relative to the optical array, the plurality of optical signals emanating from a corresponding plurality of optical fibers forming the optical array, each optical fiber of the plurality of optical fibers having an associated transmitting position and receiving position in the optical array relative to other optical fibers in the optical array; and a plurality of electrodes electrically coupled to the sensor, wherein the plurality of electrodes outputs a respective plurality of output signals in response to receipt of an optical signal of the plurality of optical signals by the sensor, the plurality of output signals being indicative of a location at which the optical signal of the plurality of optical signals was incident on the sensor; and processing circuitry electrically coupled to the plurality of electrodes, wherein the processing circuitry: receives the plurality of output signals for each of the plurality of optical signals; identifies respective locations at which the plurality of optical signals were incident on the sensor; determines, based on the identified locations, the receiving position in the optical array of at least one optical fiber of the plurality of optical fibers; and determines a polarity of the optical array based on the determined receiving position of the at least one optical fiber and a corresponding transmitting position in the optical array of the at least one optical fiber. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the processing circuitry further receives information indicating the transmitting position in the optical array of the at least one optical fiber. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein determining the polarity of the optical array further includes determining an offset between the determined receiving position and the corresponding transmitting position of the at least one optical fiber. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the polarity of the optical array is determined to be a first type if the receiving position of the at least one optical fiber is the same as the corresponding transmitting position of the at least one optical fiber. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the polarity of the optical array is determined to be a second type if the receiving position of the at least one optical fiber is offset by one position from the corresponding transmitting position of the at least one optical fiber. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the polarity of the optical array is determined to be a third type if the receiving position of the at least one optical fiber is transposed from the corresponding transmitting position of the at least one optical fiber. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the processing circuitry further determines an order of receiving positions of the optical fibers by which the plurality of optical signals were detected to emanate from the optical fibers, and receives an order of transmitting positions of the optical fibers by which the plurality of optical signals were transmitted into the optical fibers. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein determining the polarity of the optical array further includes comparing the order of the receiving positions and the order of the transmitting positions to identify an offset between the respective receiving and transmitting positions. ### Claim 9 (depends on 1) The apparatus of claim 1, further comprising: an interface communicatively coupled to the processing circuitry, wherein the interface receives an indication of the polarity of the optical array and indicates the polarity to a user. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the apparatus is selectively couplable to the optical array by an interchangeable adapter having a gender or shape compliant with a connector of the optical array. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein: the optical array is optically coupled to the apparatus at a fixed position while the plurality of optical signals are incident on the sensor; and the sensor is formed of a single substrate having an optical sensing area of sufficient size to receive the plurality of optical signals while the sensor remains in a fixed position relative to the optical array. ### Claim 12 (depends on 1) The apparatus of claim 1, further comprising: an optical system that is optically coupled to the sensor and the optical array, wherein the optical system receives, from the optical array, the plurality of optical signals and redirects at least one optical signal of the plurality of optical signals to the optical array. ### Claim 13 A method for determining optical fiber array polarity comprising: receiving, at a sensor of a position sensing detector, a plurality of optical signals from an optical array, wherein the plurality of optical signals are incident on the sensor while the sensor remains in a fixed position relative to the optical array, the plurality of optical signals emanating from a corresponding plurality of optical fibers forming the optical array, wherein the sensor is positionable with respect to the optical array and each optical fiber of the plurality of optical fibers has an associated transmitting position and receiving position relative to other optical fibers in the optical array; outputting, by a plurality of electrodes of the position sensing detector, a respective plurality of output signals in response to receipt of an optical signal of the plurality of optical signals by the sensor, each output signal of the plurality of output signals indicating a proximity of a location at which the optical signal of the plurality of optical signals was incident on the sensor to a respective electrode of the plurality of electrodes; identifying, for the plurality of optical signals, respective locations at which the plurality of optical signals were incident on the sensor, wherein the respective locations are identified based on the corresponding plurality of output signals for each received optical signal; determining, based on the identified locations, the receiving position in the optical array of at least one optical fiber of the plurality of optical fibers; and determining a polarity of the optical array based on the determined receiving position and a corresponding transmitting position in the optical array of the at least one optical fiber. ### Claim 14 (depends on 13) The method of claim 13, further comprising: receiving information indicating the corresponding transmitting position in the optical array of the at least one optical fiber. ### Claim 15 (depends on 13) The method of claim 13, wherein determining the polarity of the optical array further includes determining an offset between the determined receiving position of the at least one optical fiber and the corresponding transmitting position. ### Claim 16 (depends on 15) The method of claim 15, further comprising: determining an order of receiving positions of the optical fibers by which the plurality of optical signals were detected to emanate from the optical fibers; and receiving an order of transmitting positions of the optical fibers by which the plurality of optical signals were transmitted into the optical fibers, wherein determining the polarity of the optical array further includes comparing the order of the receiving positions and the order of the transmitting positions to identify an offset between the respective receiving and transmitting positions. ### Claim 17 An apparatus for measuring optical signal intensity comprising: a position sensing detector comprising: an optical sensor positionable with respect to an optical array, wherein the optical sensor has a single substrate optical sensing area sized sufficient to receive a plurality of optical signals from the optical array while the optical sensing area remains in a fixed position relative to the optical array, wherein the optical sensor receives an optical signal at a location within the optical sensing area; and a plurality of electrodes electrically coupled to the optical sensing area, wherein the plurality of electrodes output a respective plurality of output signals in response to receipt of the optical signal by the optical sensing area, wherein each output signal of the plurality of output signals has an electrical characteristic that is proportional to both an intensity of the optical signal and a proximity of the location at which the optical signal was received to a corresponding electrode of the plurality of electrodes; an adder that receives and aggregates the plurality of output signals and produces an output signal aggregate for the optical signal; and processing circuitry electrically coupled to the adder, wherein the processing circuitry: receives the output signal aggregate; determines an intensity of the optical signal based on the output signal aggregate, wherein the determined intensity of the optical signal is proportional to the output signal aggregate; receives the plurality of output signals for two or more of the plurality of optical signals; identifies respective locations at which the two or more of the plurality of optical signals were incident on the optical sensor; determines, based on the identified locations, a receiving position in the optical array of at least one optical fiber of a plurality of optical fibers of the optical array; and determines a polarity of the optical array based on the determined receiving position of the at least one optical fiber and a corresponding transmitting position in the optical array of the at least one optical fiber. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein: the processing circuitry further determines a link loss associated with an optical fiber used for transmitting the optical signal at least in part on the determined intensity of the optical signal. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the processing circuitry determines the link loss by comparing the determined intensity of the optical signal with a transmission intensity of the optical signal as transmitted into the optical fiber. ### Claim 20 (depends on 18) The apparatus of claim 18, further comprising an interface communicatively coupled to the processing circuitry, wherein the interface receives an indication of the determined link loss from the processing circuitry and indicates the determined link loss to a user.